[SaudiDuck]

Based on a little research (and a couple of Stammtisch discussions with West German nationals in the early 80's, I would humbly submit the following additions:

1956 – Germany stands by while the Soviet hordes crush the Hungarian Revolution.

1968 – Germany stands idly by while Soviet horde and four other Warsaw Pact armies stamp out Czech Reform Movement.

[Austin Willard Wright]

Well...the same was true in 1956 and 1968 for the U.S. too, wouldn't you say?